IPv6 Addressing - Anycast Addressing
==========================================

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        **What is Anycast addressing?**

        Anycast is a network addressing and routing method where the same IP address is assigned to multiple devices, and traffic is routed to the nearest or best destination based on routing protocols.

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        **Why is Anycast useful?**

        Anycast improves performance and availability by directing traffic to the closest or most responsive server, reducing latency and providing redundancy.

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        **How it works?**

        Multiple servers share the same IP address. Routers use dynamic routing protocols (like BGP) to send packets to the nearest instance based on network topology and routing metrics.

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        **Where is Anycast used?**

        Anycast is widely used in DNS (e.g., root DNS servers), CDN networks, DDoS mitigation services, and global load balancing.

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        **Which OSI layer does this protocol belong to?**

        Anycast operates at the Network Layer (Layer 3) of the OSI model.

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        **Is Anycast Windows specific?**

        No, Anycast is not Windows specific. It is a network routing concept and is OS-agnostic.

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        **Is Anycast Linux specific?**

        No, Anycast is not Linux specific. However, it can be implemented and configured on Linux-based systems using appropriate network tools.

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        **Which Transport Protocol is used by Anycast?**

        Anycast is transport protocol-independent. It can be used with TCP, UDP, or any IP-based protocol.

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        **Which Port is used by Anycast?**

        Anycast does not use a specific port. Port usage depends on the application (e.g., DNS over UDP port 53).

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        **Is Anycast using client-server model?**

        Yes, Anycast is typically used in client-server models where clients connect to the nearest server instance using the same IP address.

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        Topics in this section,

                * :ref:`Learnings in this section <Anycast_Addressing_step1>`

                * :ref:`Terminology <Anycast_Addressing_step2>`

                * :ref:`Version Info <Anycast_Addressing_step3>`

                * :ref:`Anycast_Addressing Version&IEEE Details <Anycast_Addressing_step5>`

                * :ref:`Anycast_Addressing Basic Setup on Ubuntu using IPv4 <Anycast_Addressing_step18>`

                * :ref:`Anycast_Addressing Basic Setup on Ubuntu using IPv6 <Anycast_Addressing_step19>`

                * :ref:`Anycast_Addressing Protocol Packet Details <Anycast_Addressing_step6>`

                * :ref:`Anycast_Addressing Usecases <Anycast_Addressing_step7>`

                * :ref:`Anycast_Addressing Basic Features <Anycast_Addressing_step8>`
                    
                * :ref:`Reference links <Anycast_Addressing_step17>`


.. _Anycast_Addressing_step1:

.. tab-set::

    .. tab-item:: Learnings in this section

        * In this section, you are going to learn

.. _Anycast_Addressing_step2:

.. tab-set::

    .. tab-item:: Terminology
        
       * Terminology


.. _Anycast_Addressing_step3:

.. tab-set::

    .. tab-item:: Version Info
    
         * Version Info


.. _Anycast_Addressing_step5:

.. tab-set::

    .. tab-item:: Anycast_Addressing Version&RFC Details

        * rfc details

.. _Anycast_Addressing_step18:

.. tab-set::

    .. tab-item:: Anycast_Addressing Basic Setup on Ubuntu using IPv4

       * setup

.. _Anycast_Addressing_step19:

.. tab-set::
  
   .. tab-item:: Anycast_Addressing Basic Setup on Ubuntu using IPv6

     * setup
       
.. _Anycast_Addressing_step6:

.. tab-set::

    .. tab-item:: Anycast_Addressing Protocol Packet Details

        * packet details
       


.. _Anycast_Addressing_step7:

.. tab-set::

    .. tab-item:: Anycast_Addressing Usecases

       * usecases
        
        

.. _Anycast_Addressing_step8:

.. tab-set::

    .. tab-item:: Anycast_Addressing Basic Features
    
        * features 



.. _Anycast_Addressing_step17:

.. tab-set::

    .. tab-item:: Reference links
     
       * Reference links